I came across this show a few days ago. The episode I saw covered the restoration of a Panther Tank which sank to the bottom of a Polish river in January 1945.
The underwriter of the restoration is a man named Jaques Littlefield, owner of the largest private tank collection in the world. Some photos of his stuff are located at:
Clicky here
The show is fascinating. There was an interesting comparison of the battlefield repair process between the Panther and the Sherman, as well as a comparison of their respective drive mechanisms and gears.
Keep a look out for it; it's well worth watching. Now this is a hobby I could get into!
Clicky 2
Herr Schacht